440424441293 has 2 divisors, whose sum is σ = 440424441294. Its totient is φ = 440424441292.

The previous prime is 440424441187. The next prime is 440424441311. The reversal of 440424441293 is 392144424044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222823649764 + 217600791529 = 472042^2 + 466477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440424441293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440424441293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440424441893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220212220646 + 220212220647.

It is an arithmetic number, because the mean of its divisors is an integer number (220212220647).

Almost surely, 2^440424441293 is an apocalyptic number.

It is an amenable number.

440424441293 is a deficient number, since it is larger than the sum of its proper divisors (1).

440424441293 is an equidigital number, since it uses as much as digits as its factorization.

440424441293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 440424441293 in words is "four hundred forty billion, four hundred twenty-four million, four hundred forty-one thousand, two hundred ninety-three".